I've noticed and reproduced this behavior in Accordance 13.1.2 Mac:
When searching a text and you enter something that isn't found, you get the expected sheet "The … you entered cannot be found …" and contextually appropriate button(s).
At this point, however, any keystrokes that are pressed (such as command-w to close, command-d to duplicate, etc.) get passed through and the sheet remains. This should not be!
By contrast, the Set Text/Tool Display… sheet is properly modal and does not behave in this way.
Also, why is it that when searching for Scripture in tools, that if the entered reference does not exist, that the error is a modal window and not a sheet?
Edited by jpkang, 18 July 2020 - 02:37 PM.